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| Number | Title | Issue Date |
| 4280898 | Fluid catalytic cracking of heavy petroleum fractions A process for fluid catalytic cracking of residuum and other heavy oils comprising gas oil, petroleum residue, reduced and whole crudes and shale oil with high metals contents wherein contaminant metals comprising nickel, vanadium, copper and iron are dea... | 07/28/1981 |
| 4280895 | Passivation of cracking catalysts A method for passivating a catalyst utilized to crack hydrocarbon feedstock to lower molecular weight products in a reation zone is disclosed, where the feedstock contains at least two metal contaminants selected from the class consisting of nickel, vanad... | 07/28/1981 |
| 4280896 | Passivation of cracking catalysts A method for passivating a catalyst used to crack hydrocarbon feedstock to lower molecular weight products in a reaction zone is disclosed where the feedstock contains at least one metal contaminant selected from the class consisting of nickel, vanadium a... | 07/28/1981 |
| 4268416 | Gaseous passivation of metal contaminants on cracking catalyst A contaminating metal on a cracking catalyst used for the cracking of hydrocarbons is passivated by contacting the catalyst at reduction conditions with a reducing gas such as hydrogen that has been saturated with water at ambient conditions.... | 05/19/1981 |
| 4247388 | Hydrodewaxing catalyst performance A method is disclosed for the improvement of catalyst performance in catalytic hydrodewaxing of both petroleum and synthetic hydrocarbon feedstocks utilizing a special group of acidic crystalline aluminosilicate zeolites such as those of the ZSM-5 type wh... | 01/27/1981 |
| 4244811 | Catalytic cracking process with simultaneous production of a low BTU fuel gas and catalyst regeneration A process is described for the catalytic cracking of a hydrocarbon feedstream involving the use of an acid catalyst comprising a catalytic component selected from the group consisting of oxides of tungsten, niobium and mixtures thereof and tungsten or nio... | 01/13/1981 |
| 4225530 | Rhodium catalyst regeneration by carbon monoxide treatment This invention relates to the continuous production of alkane polyols by the reaction of hydrogen and CO in a homogeneous liquid phase mixture containing a rhodium carbonyl complex catalyst, the mole ratio of H2 /CO in the reactant gas being ab... | 09/30/1980 |
| 4211718 | Methanation process Methane is prepared by contacting carbon monoxide and hydrogen in the presence of a supported iridium-containing or rhodium-containing catalyst and a small, effective amount of steam to maintain methanation catalyst activity. In another embodiment, the me... | 07/08/1980 |
| 4208302 | Passivating metals on cracking catalysts Contaminating metals on a clay based cracking catalyst are passivated by contacting the catalyst with indium antimonide under elevated temperature conditions.... | 06/17/1980 |
| 4196176 | Method and apparatus for controlling accidental releases of tritium An improvement in a tritium control system based on a catalytic oxidation reactor wherein accidental releases of tritium into room air are controlled by flooding the catalytic oxidation reactor with hydrogen when the tritium concentration in the room air ... | 04/01/1980 |
| 4192771 | Process for dispersal and redispersal of platinum group metals comprising sulphiding in a stream of inert gas A process for the redispersal or dispersal of a platinum group metal in a catalyst comprising an oxidized platinum group metal component and a refactory inorganic support comprises the steps of treating the oxidized catalyst with a stream of inert gas con... | 03/11/1980 |
| 4178267 | Passivating metals on cracking catalysts Metals such as nickel, vanadium and iron contaminating a cracking catalyst are passivated by contacting the cracking catalyst under elevated temperature conditions with antimony selenide, antimony sulfide, antimony sulfate, bismuth selenide, bismuth sulfi... | 12/11/1979 |
| 4172027 | Catalytic process for reforming or production of aromatic hydrocarbons Catalytic process for reforming or production of aromatic hydrocarbons at a temperature from 480° to 600° C., wherein a charge of hydrocarbons and hydrogen is passed through two reaction zones, of the moving bed type, whose catalyst continuously flows d... | 10/23/1979 |
| 4155836 | Hydrocarbon reforming process with sulfur sensitive catalyst An improved process minimizing the detrimental effects caused by inadvertently contacting a high sulfur, high water-containing hydrocarbon feedstock with a platinum group metal, halogen-containing catalyst is disclosed. The present process involves discon... | 05/22/1979 |
| 4144189 | Process for regenerating spent cracking catalyst A process for regenerating spent cracking catalyst, especially spent fluid cracking catalyst, is provided, which includes subjecting a mixture of spent cracking catalyst particles and hydrogen to wave energy in the microwave range.... | 03/13/1979 |
| 4134826 | Method for producing hydrocarbon fuels from heavy polynuclear hydrocarbons by use of molten metal halide catalyst In a process for hydrocracking heavy polynuclear carbonaceous feedstocks to produce lighter hydrocarbon fuels by contacting the heavy feedstocks with hydrogen in the presence of a molten metal halide catalyst, thereafter separating at least a substantial ... | 01/16/1979 |
| 4105704 | Method for preparing and using a soluble metal pentafluoride-hydrogen fluoride catalyst A soluble HF/TaF5 catalyst is prepared in the absence of an organic solvent according to the steps of: (1) contacting tantalum metal with substantially anhydrous liquid HF to form soluble TaF5, the amount of HF being sufficient to maintai... | 08/08/1978 |
| 4098833 | Regeneration of hydrocarbon conversion catalysts Hydrocarbon conversion catalysts comprising a metal halide in combination with a Bronsted acid containing fluorine that have become deactivated or partially deactivated by the formation of allyl and alkylaromatic carbonium ion complexes with the acid duri... | 07/04/1978 |
| 4079072 | Methanation process Methane is prepared by contacting carbon monoxide and hydrogen in the presence of a supported rhodium-containing catalyst promoted with uranium. In another embodiment, the methanation activity of supported rhodium-containing catalysts lost due to sulfur p... | 03/14/1978 |
| 4065484 | Methanation process with intermittent reactivation of catalyst A process is provided for the hydrogenation of carbon monoxide and/or carbon dioxide to form methane (methanation), using certain sulfur-sensitive nickel-alumina catalysts having a relatively low ratio of nickel surface area to nickel mass. It has been fo... | 12/27/1977 |
| 4043938 | Methods for reactivating zeolites A zeolite of type 5A, which has been used to separate normal paraffins from a hydrocarbon mixture containing normal paraffins by bringing the hydrocarbon mixture into contact with the zeolite whereby the zeolite absorbs the normal paraffins and then desor... | 08/23/1977 |
| 3988259 | Catalyst regeneration A catalyst consisting essentially of a support which does not lose its integrity when contacted with vapor, water and oxygen under elevated temperature conditions, promoted with 0.05-20 weight percent of (1) at least two different metals active for initia... | 10/26/1976 |
| 3968028 | Process for onstream regeneration of a hydrodesulfurization catalyst An asphaltene-containing oil hydrodesulfurization process employing stages in series with an interstage flashing step. The second stage catalyst comprises Group VI and Group VIII metals together with a promoting amount of Group IV-B metal. The coke level ... | 07/06/1976 |
